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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="reset.css">
    <link rel="stylesheet" href="demo.css">
</head>

<body>
    <div>
        <p>
            <a>haha</a>
        </p>
    </div>

    <script>
        let arr = [12, 23, 41, 65, 65, 3];
        let newArr = arr.map(item => item >= 60);
        console.log(arr, newArr)
    </script>
</body>

</html>